package com.duan.controller;

import com.duan.pojo.Books;
import com.duan.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;


import java.util.ArrayList;
import java.util.List;

@Controller
@RequestMapping("/book")
public class BookController {

    //controller调service层
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;

    //查询所有书籍，并且返回一个书籍页面展示
    @RequestMapping("/allBook")
    public String list(Model model){
        List<Books> list = bookService.queryAllBook();
        model.addAttribute("list", list);
        return "allBook";
    }

    //跳转到增加书籍页面
    @RequestMapping("/toAddBook")
    public String toAddPaper()
    {
        return "addBook";
    }
    //添加书籍的请求
    @RequestMapping("/addBook")
    public String addBook(Books books){
        bookService.addBook(books);
        return "redirect:/book/allBook";//重定向
    }

    //跳转到修改界面
    @RequestMapping("/toUpdateBook")
    public String toUpdatePaper(int id, Model model){
        Books books = bookService.queryBookById(id);
        model.addAttribute("SrcBook",books);
        return "updateBook";
    }
    //修改书籍
    @RequestMapping("updateBook")
    public String updateBook(Books books){
        bookService.updateBook(books);
        return "redirect:/book/allBook";
    }
    //删除书籍(Restful风格)
    @RequestMapping("deleteBook/{bookID}")
    public String deleteBook(@PathVariable("bookID") int id){
        bookService.deleteBookById(id);
        return "redirect:/book/allBook";
    }
    //查询一本书
    @RequestMapping("/queryBook")
    public String queryBook(String queryBookName, Model model){
        Books books = bookService.queryBookByName(queryBookName);
        List<Books> list = new ArrayList<>();
        if(books == null){
            list = bookService.queryAllBook();
            model.addAttribute("error", "未查到");
        }
        else
            list.add(books);
        model.addAttribute("list", list);
        return "allBook";
    }
}
